Receiver Apparatus

a receiver and receiver technology, applied in the field of receiver devices, can solve the problems of frequency fluctuations and adversely affect the reception of signals, and achieve the effects of reducing the number of receivers
US20070274222A1Active Publication Date: 2007-11-29PANASONIC CORP
7 Cites 13 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2007-11-29

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

[PROBLEMS] To realize power saving of a receiver apparatus for receiving time-division multiplexed signals. [MEANS FOR SOLVING PROBLEMS] In the receiver apparatus, power is supplied to a receiver circuit in accordance with an operation start time. A signal is received through the receiver circuit, and a quality of the received signal is evaluated by a signal quality evaluation unit 109. Control is exercised to set a late operation start time if the quality of the received signal is good, and an early operation start time if the quality of the received signal is bad. In this way, a period for supplying power to the receiver circuit can be adjusted according to the quality of the received signal. This makes it unnecessary to fix, as in conventional techniques, a long power supply period in consideration of the case where the signal quality is bad. As a result, more power saving can be achieved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present invention relates to a receiver apparatus for receiving time-division multiplexed signals, and especially relates to power saving techniques. BACKGROUND ART

[0002] To receive a desired signal from a time-division multiplexed signal, a receiver apparatus that switches a power supply to a receiver circuit on and off according to signal reception timings has conventionally been used as shown in patent document 1 (see patent document 1).

[0003] The receiver apparatus shown in patent document 1 starts the power supply to the receiver circuit a predetermined time before reception of a signal begins, in order to suppress adverse effects caused by repeating power-on and power-off. One example of such adverse effects is as follows. By repeating power-on and power-off, a power supply voltage changes, which affects a PLL (Phase Locked Loop) circuit and causes frequency fluctuations. This adversely affects signal reception, such as by preventing stable signal ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More